173 lines
6.4 KiB
C
173 lines
6.4 KiB
C
/* $NetBSD: ubavar.h,v 1.36 2005/02/26 12:45:06 simonb Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)ubavar.h 7.7 (Berkeley) 6/28/90
|
|
*/
|
|
#ifndef _QBUS_UBAVAR_H
|
|
#define _QBUS_UBAVAR_H
|
|
|
|
/*
|
|
* This file contains definitions related to the kernel structures
|
|
* for dealing with the unibus adapters.
|
|
*
|
|
* Each uba has a uba_softc structure.
|
|
* Each unibus controller which is not a device has a uba_ctlr structure.
|
|
* Each unibus device has a uba_device structure.
|
|
*/
|
|
|
|
/*
|
|
* Per-uba structure.
|
|
*
|
|
* This structure holds the interrupt vector for the uba,
|
|
* and its address in physical and virtual space. At boot time
|
|
* we determine the devices attached to the uba's and their
|
|
* interrupt vectors, filling in uh_vec. We free the map
|
|
* register and bdp resources of the uba into the structures
|
|
* defined here.
|
|
*
|
|
* During normal operation, resources are allocated and returned
|
|
* to the structures here. We watch the number of passive releases
|
|
* on each uba, and if the number is excessive may reset the uba.
|
|
*
|
|
* When uba resources are needed and not available, or if a device
|
|
* which can tolerate no other uba activity (rk07) gets on the bus,
|
|
* then device drivers may have to wait to get to the bus and are
|
|
* queued here. It is also possible for processes to block in
|
|
* the unibus driver in resource wait (mrwant, bdpwant); these
|
|
* wait states are also recorded here.
|
|
*/
|
|
struct uba_softc {
|
|
struct device uh_dev; /* Device struct, autoconfig */
|
|
struct evcnt uh_intrcnt; /* interrupt counting */
|
|
SIMPLEQ_HEAD(, uba_unit) uh_resq; /* resource wait chain */
|
|
SIMPLEQ_HEAD(, uba_reset) uh_resetq; /* ubareset queue */
|
|
int uh_lastiv; /* last free interrupt vector */
|
|
int (*uh_errchk)(struct uba_softc *);
|
|
void (*uh_beforescan)(struct uba_softc *);
|
|
void (*uh_afterscan)(struct uba_softc *);
|
|
void (*uh_ubainit)(struct uba_softc *);
|
|
void (*uh_ubapurge)(struct uba_softc *, int);
|
|
short uh_nr; /* Unibus sequential number */
|
|
short uh_type; /* Type of bus */
|
|
bus_space_tag_t uh_iot; /* Tag for this Unibus */
|
|
bus_space_handle_t uh_ioh; /* Handle for I/O space */
|
|
bus_dma_tag_t uh_dmat;
|
|
char *uh_used; /* I/O addresses used */
|
|
};
|
|
|
|
/*
|
|
* Per-controller structure.
|
|
* The unit struct is common to both the adapter and the controller
|
|
* to which it belongs. It is only used on controllers that handles
|
|
* BDP's, and calls the adapter queueing subroutines.
|
|
*/
|
|
struct uba_unit {
|
|
SIMPLEQ_ENTRY(uba_unit) uu_resq;/* Queue while waiting for resources */
|
|
void *uu_softc; /* Pointer to units softc */
|
|
int uu_bdp; /* for controllers that hang on to bdp's */
|
|
int (*uu_ready)(struct uba_unit *);
|
|
void *uu_ref; /* Buffer this is related to */
|
|
short uu_xclu; /* want exclusive use of bdp's */
|
|
short uu_keepbdp; /* hang on to bdp's once allocated */
|
|
};
|
|
|
|
/*
|
|
* Reset structure. All devices that needs to be reinitialized
|
|
* after an ubareset registers with this struct.
|
|
*/
|
|
struct uba_reset {
|
|
SIMPLEQ_ENTRY(uba_reset) ur_resetq;
|
|
void (*ur_reset)(struct device *);
|
|
struct device *ur_dev;
|
|
};
|
|
|
|
/*
|
|
* uba_attach_args is used during autoconfiguration. It is sent
|
|
* from ubascan() to each (possible) device.
|
|
*/
|
|
struct uba_attach_args {
|
|
bus_space_tag_t ua_iot; /* Tag for this bus I/O-space */
|
|
bus_addr_t ua_ioh; /* I/O regs addr */
|
|
bus_dma_tag_t ua_dmat; /* DMA tag for this bus'es dma */
|
|
struct evcnt *ua_evcnt;
|
|
void *ua_icookie; /* Cookie for interrupt establish */
|
|
int ua_iaddr; /* Full CSR address of device */
|
|
int ua_br; /* IPL this dev interrupted on */
|
|
int ua_cvec; /* Vector for this device */
|
|
};
|
|
|
|
/*
|
|
* Flags to UBA map/bdp allocation routines
|
|
*/
|
|
#define UBA_NEEDBDP 0x01 /* transfer needs a bdp */
|
|
#define UBA_CANTWAIT 0x02 /* don't block me */
|
|
#define UBA_NEED16 0x04 /* need 16 bit addresses only */
|
|
#define UBA_HAVEBDP 0x08 /* use bdp specified in high bits */
|
|
#define UBA_DONTQUE 0x10 /* Do not enqueue xfer */
|
|
|
|
/*
|
|
* Type of adapter.
|
|
*/
|
|
#define UBA_UBA 0 /* Traditional unibus adapter */
|
|
#define UBA_MVI 1 /* MVI direct-mapped unibus */
|
|
#define UBA_QBUS 2 /* Qbus with map registers */
|
|
/*
|
|
* Struct for unibus allocation.
|
|
*/
|
|
struct ubinfo {
|
|
bus_dmamap_t ui_dmam;
|
|
bus_dma_segment_t ui_seg;
|
|
int ui_rseg;
|
|
caddr_t ui_vaddr;
|
|
bus_addr_t ui_baddr;
|
|
bus_size_t ui_size;
|
|
};
|
|
|
|
/*
|
|
* Some common defines for all subtypes of U/Q-buses/adapters.
|
|
*/
|
|
#define MAXUBAXFER (63*1024) /* Max transfer size in bytes */
|
|
#define ubdevreg(addr) ((addr) & 017777)
|
|
|
|
#ifdef _KERNEL
|
|
void uba_intr_establish(void *, int, void (*)(void *), void *, struct evcnt *);
|
|
void uba_reset_establish(void (*)(struct device *), struct device *);
|
|
void uba_attach(struct uba_softc *, unsigned long);
|
|
void uba_enqueue(struct uba_unit *);
|
|
void uba_done(struct uba_softc *);
|
|
void ubareset(struct uba_softc *);
|
|
int uballoc(struct uba_softc *, struct ubinfo *, int);
|
|
int ubmemalloc(struct uba_softc *, struct ubinfo *, int);
|
|
void ubfree(struct uba_softc *, struct ubinfo *);
|
|
void ubmemfree(struct uba_softc *, struct ubinfo *);
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _QBUS_UBAVAR_H */
|